Respiratory Rate Counter — Measure Breaths per Minute
Count breaths with a timer
For a resting measurement, wait until the person is calm. Count one complete rise and fall of the chest or abdomen as one breath.
Select Start count, then use this button after each full breath. While the timer is running, the B key also counts a breath.
Ready for a 60-second count.
Breathing rate result
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Convert a manual breath count
How to measure respiratory rate
- Let the person rest. Talking, walking, exercise, fever, pain, anxiety, and knowing that breathing is being watched can change the rate.
- Watch the chest or abdomen. One inhale and one exhale—a complete rise and fall—counts as one breath. Do not count both movements separately.
- Count for 60 seconds when possible. A full minute avoids multiplication and is especially useful when breathing is irregular. A 30-second count is a quicker estimate.
- Record more than the number. Note whether the person was resting or active and whether breathing looked regular, shallow, noisy, or difficult. This tool measures rate only.
Formula and rounding
Breaths per minute formula
Results are shown to one decimal place only when needed. A full 60-second count remains a whole-number count unless the timer is finished early.
Why observation time matters
With a 30-second count, every single breath changes the estimate by 2 breaths/min. With a 15-second count, every breath changes it by 4 breaths/min.
Understanding a breathing-rate result
A commonly used broad orientation band for a resting adult is about 12–20 breaths per minute. Published sources differ slightly—for example, MedlinePlus lists 12–18 for the average healthy resting adult—so the number is not a diagnosis or a universal cutoff.
| Context | How to use the result | Important limitation |
|---|---|---|
| Adult at rest | Use a calm full-minute count and compare with the person's usual pattern as well as general adult references. | Illness, medicines, sleep, altitude, pain, anxiety, and chronic heart or lung conditions can shift the rate. |
| Child at rest | Use age-specific professional guidance. Infants and younger children normally breathe faster than adults. | Do not apply the adult 12–20 orientation band to a child. |
| After activity | Expect breathing to be faster. If measuring a baseline, wait for rest and repeat under similar conditions. | An exercise reading should not be interpreted as a resting rate. |
| Irregular breathing | Count for the full 60 seconds and note rhythm, pauses, depth, noise, and effort. | A calculator cannot assess the pattern or decide why it is irregular. |
Safety and medical limits
A rate inside a reference band does not prove that breathing is safe. Work of breathing, colour, alertness, chest pain, wheezing or other noise, and a sudden change from the person's normal pattern may be more important than the number.
This page is an educational counting aid, not a medical device. It cannot measure oxygen saturation, diagnose infection or lung disease, assess treatment, or replace a clinician. Seek medical advice for a persistent or unexplained change, even without emergency symptoms.
Sources and methodology
- MedlinePlus: Vital signs — respiratory rate as a vital sign and the 12–18 breaths/min reference for an average healthy resting adult (reviewed January 1, 2025).
- Health Education England: Work Experience in Nursing guide — observe chest rise and fall, count for a full minute, and note breathing difficulty, pattern, depth, and colour.
- World Health Organization: Nursing care of the sick — one-minute observation, breathing rhythm, depth, effort, and a 12–20 resting-adult reference.
- NHS: Blue or grey skin or lips — emergency signs including sudden blue or grey colour, breathing difficulty, chest pain, confusion, or drowsiness.
- NHS: First aid — call emergency services and begin CPR when someone is not breathing normally.
Implementation note: calculations use exact elapsed seconds and the formula shown above. The timer uses the browser's monotonic clock, so delayed screen updates do not change elapsed-time arithmetic. User input and results are not sent anywhere by this tool.
Respiratory rate FAQ
What is respiratory rate?
Respiratory rate is the number of complete breathing cycles taken in one minute. One inhale followed by one exhale counts as one breath.
How do I count breaths per minute?
Watch the chest or abdomen while the person is resting. Count one rise and fall as one breath. Count for a full 60 seconds when possible, particularly if the rhythm is irregular.
Can I count for 30 seconds and multiply by two?
Yes. A 30-second count multiplied by two gives a quick estimate. A full-minute count reduces rounding error and is preferred when breathing is slow, irregular, or concerning.
What is a typical resting respiratory rate for an adult?
A commonly used orientation band is about 12–20 breaths per minute for a resting adult, although published ranges vary. Symptoms, effort, personal baseline, medicines, illness, and measurement conditions matter.
Can I use the adult range for a child?
No. Children, especially infants, normally breathe faster than adults, and expected ranges change substantially with age. Use age-specific clinical guidance and consider breathing effort and behaviour.
What can change breathing rate?
Exercise, fever, pain, anxiety, sleep, altitude, lung or heart conditions, infection, and some medicines can change respiratory rate. Talking or knowing that breathing is being counted can alter the pattern too.
When is breathing an emergency?
Seek emergency help if someone is not breathing normally, is gasping or struggling to breathe, cannot speak because of breathlessness, becomes suddenly confused or very drowsy, or has blue or grey lips, tongue, face, or skin.
Does this tool store my respiratory rate?
No. Counting, calculation, copying, and download preparation happen locally in the browser. This tool does not upload or save the measurement.